Refer to actuator nameplate for supply voltage and wiring diagram for
applicable transformer type.
In order to maintain hazardous area certification only the fuses listed
below may be used:
83
IQT Approvals cont.
13
All Transformer types
Fuse FS3 - ATO 20A Fast acting
Transformer Type 1
Fuse FS1 - Bussman TDC11, 250mA, Antisurge 1.5"
Fuse FS2 - Siba 70-065-65, 500V, 5A, Antisurge, 1.5"
Transformer Type 2
Fuse FS1 - Bussman TDC11, 150mA, Antisurge 1.5"
Fuse FS2 - Siba 70-065-65, 500V, 2.5A, Antisurge, 1.5"
Transformer Type 3
Fuse FS1 - Bussman TDC11, 100mA, Antisurge 1.5"
Fuse FS2 - Siba 70-065-65, 500V, 1.5A, Antisurge, 1.5"
Transformer Type 4
Fuse FS1 - Bussman TDC11, 50mA, Antisurge 1.5"
Fuse FS2 - Siba 70-065-63, 500V, 1.6A, Antisurge, 1.5"
ATEX actuators only
FS4 Bussman TDS (100mA - quick blow) or
Littel Fuse 217 (100mA quick blow)
IQT MAXIMUM FLAMEPATH GAPS
Flamepath Max. Gap (mm) Min Length (mm) Actuator Type and Size
Terminal Cover/Gearcase 0.15 26.7 All Types and Sizes
Terminal Bung Gearcase (IIB) 0.20 25.9 All Types and Sizes
Terminal Bung Gearcase (IIC) 0.115 25.9 All Types and Sizes
Electrical Cover/Gearcase 0.15 26.2 All Types and Sizes
Motor Cover/Gearcase 0.15 25.6 All Types and Sizes
Motor Shaft/Motor Shaft Shroud 0.24 25.2 All Types and Sizes
Motor Shaft Shroud/Gearcase -0.05/0.00 25.0 All Types and Sizes
Encoder Shaft/encoder Shaft Shroud 0.24 25.2 All Types and Sizes
Encoder Shaft Shroud/Gearcase -0.05/0.00 25.0 All Types and Sizes
Note Negative Sign denotes an interference fit.
• The actuator must only be located where the risk of impact upon the window is low.
Conditions of Safe Use
• The following are the maximum constructional flamepath gaps for ATEX and IECEx Approved actuators.
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